Frequency dependences of Ac losses in (Bi1-xPbx)2Sr2Ca2Cu3Oy bulk superconductors in Ac magnetic field

Masataka Iwakuma, Hiroyuki Konomi, Kazuo Funaki, Masakatsu Takeo, Kunishige Kuroda, Yasuzou Tanaka, Masanao Mimura, Kiyoshi Takita, Hisaaki Hiue, Kaoru Yamafuji

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

It is shown that the observed ac loss in a cylindrical (Bi1-xPbxSr2Ca2Cu3Oy (Bi-2223) bulk superconductor with the diameter of 9.6mm in the ac magnetic field depends on the frequency of ac field contradicting the conventional theory based on the critical state model. The numerical simulation of electromagnetic field was performed by solving the Maxwell equations using the observed magnetic field dependence of critical current density and voltage-current characteristics. As the results, it is clarified that this deviation originates from the fact that the internal distribution of flux density indifferent from that predicted by the critical state model.

Original languageEnglish
Pages (from-to)793-796
Number of pages4
JournalCryogenics
Volume34
Issue numberSUPPL. 1
DOIs
Publication statusPublished - Jan 1 1994

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Superconducting materials
Magnetic fields
Maxwell equations
Current voltage characteristics
magnetic fields
Maxwell equation
Electromagnetic fields
critical current
electromagnetic fields
flux density
current density
Fluxes
deviation
Computer simulation
electric potential
simulation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Iwakuma, M., Konomi, H., Funaki, K., Takeo, M., Kuroda, K., Tanaka, Y., ... Yamafuji, K. (1994). Frequency dependences of Ac losses in (Bi1-xPbx)2Sr2Ca2Cu3Oy bulk superconductors in Ac magnetic field. Cryogenics, 34(SUPPL. 1), 793-796. https://doi.org/10.1016/S0011-2275(05)80187-0

Frequency dependences of Ac losses in (Bi1-xPbx)2Sr2Ca2Cu3Oy bulk superconductors in Ac magnetic field. / Iwakuma, Masataka; Konomi, Hiroyuki; Funaki, Kazuo; Takeo, Masakatsu; Kuroda, Kunishige; Tanaka, Yasuzou; Mimura, Masanao; Takita, Kiyoshi; Hiue, Hisaaki; Yamafuji, Kaoru.

In: Cryogenics, Vol. 34, No. SUPPL. 1, 01.01.1994, p. 793-796.

Research output: Contribution to journalArticle

Iwakuma, M, Konomi, H, Funaki, K, Takeo, M, Kuroda, K, Tanaka, Y, Mimura, M, Takita, K, Hiue, H & Yamafuji, K 1994, 'Frequency dependences of Ac losses in (Bi1-xPbx)2Sr2Ca2Cu3Oy bulk superconductors in Ac magnetic field', Cryogenics, vol. 34, no. SUPPL. 1, pp. 793-796. https://doi.org/10.1016/S0011-2275(05)80187-0
Iwakuma, Masataka ; Konomi, Hiroyuki ; Funaki, Kazuo ; Takeo, Masakatsu ; Kuroda, Kunishige ; Tanaka, Yasuzou ; Mimura, Masanao ; Takita, Kiyoshi ; Hiue, Hisaaki ; Yamafuji, Kaoru. / Frequency dependences of Ac losses in (Bi1-xPbx)2Sr2Ca2Cu3Oy bulk superconductors in Ac magnetic field. In: Cryogenics. 1994 ; Vol. 34, No. SUPPL. 1. pp. 793-796.
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AU - Funaki, Kazuo

AU - Takeo, Masakatsu

AU - Kuroda, Kunishige

AU - Tanaka, Yasuzou

AU - Mimura, Masanao

AU - Takita, Kiyoshi

AU - Hiue, Hisaaki

AU - Yamafuji, Kaoru

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AB - It is shown that the observed ac loss in a cylindrical (Bi1-xPbxSr2Ca2Cu3Oy (Bi-2223) bulk superconductor with the diameter of 9.6mm in the ac magnetic field depends on the frequency of ac field contradicting the conventional theory based on the critical state model. The numerical simulation of electromagnetic field was performed by solving the Maxwell equations using the observed magnetic field dependence of critical current density and voltage-current characteristics. As the results, it is clarified that this deviation originates from the fact that the internal distribution of flux density indifferent from that predicted by the critical state model.

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